2BGXU-YQ-B2216Bluetooth Module

Zhijian Internet (Xiamen) Information Technology Co., LTD Best Service Premium Product ——————————————————————————————————————————————————————————————————— WWW.THINKFITER.COM Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China 1 Zhijian Internet (Xiamen) Information Technology Co., LTD About the Manual YQ_B2216 Bluetooth Module Zhijian Internet (Xiamen) Information Technology Co., LTD Best Service Premium Product ——————————————————————————————————————————————————————————————————— WWW.THINKFITER.COM Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China 2 This specification provides a basic introduction to the YQ_B2216 module, including its electrical specifications, RF performance, pin dimensions, and reference schematic design. Readers can refer to this document for a detailed understanding of the module's overall functional parameters and applications. If you have any questions, please log in to http://www.thinkfiter.com/ to contact our company or customer service. Revision History Version Date Revision History Reviser Auditor V1.0 2025.12.17 OV Zhijian Internet (Xiamen) Information Technology Co., LTD Best Service Premium Product ——————————————————————————————————————————————————————————————————— WWW.THINKFITER.COM Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China 3 Table of Contents About the Manual···············································································2 Revision History ·················································································2 1. Product Overview ..................................................................................................................................................................... 3 1.1 Features ..................................................................................................................................................................................... 3 1.2 Application Areas ............................................................................................................................................................. 5 2. Electrical Specifications ........................................................................................................................................................... 5 3. Pin Description ......................................................................................................................................................................... 8 4. Design Reference ..................................................................................................................................................................... 10 4.1 Module Dimensions .......................................................................................................................................................... 10 4.2 PCB Encapsulation ........................................................................................................................................................... 11 4.3 Cautions ............................................................................................................................................................................. 11 5. Furnace Parameter .............................................................................................................................................................. 12 6. OEM Guidance .......................................................................................................................................................................... 14 1. Product Overview 1.1 Features YQ_B2216 is a small-sized, low-cost Bluetooth Low Energy (BLE) standardized transparent transmission module developed by ThinkFIT. The module supports BLE (up Zhijian Internet (Xiamen) Information Technology Co., LTD Best Service Premium Product ——————————————————————————————————————————————————————————————————— WWW.THINKFITER.COM Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China 4 to Bluetooth 5.2) and features a built-in 512kB FLASH memory, which supports dynamic stack and protocol profile configurations. The product functionality can be configured through software, providing ultimate flexibility. Additionally, it supports hardware OTA upgrades and multiple boot switching, allowing for convenient product feature releases and upgrades. The module features include: ▶High Performance 32-bit MCU RSIC @48M ，256KB Flash，24KB SRAM ▶Bluetooth 5.2 Standard,RF Data link up to 2Mbps ▶Transmission Power:Maximum -3.28dBm ▶-99dBm@BLE 1Mbps；-96dBm@ BLE 2Mbps mode ▶ Support UART Interface ▶Support APP Parameter Configure ▶Snap off hole Pin + 4 PIN Terminal interface: Easy for Welding ▶Compact Encapsulation:21.59x15.75mm Board Thickness 1.0mm ▶Working Temperature：-40°C~+85°C The YQ_B2216 module only requires the connection of four wires (VCC, GND, TX, RX) to achieve data transparent transmission functionality. It can also be applied to various small-sized accessories or fitness products through the use of Snap off holes. ThinkFIT has strong research and development capabilities, enabling seamless interconnection, data transmission, and various other applications for users' Bluetooth Zhijian Internet (Xiamen) Information Technology Co., LTD Best Service Premium Product ——————————————————————————————————————————————————————————————————— WWW.THINKFITER.COM Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China 5 devices. Our company can customize Bluetooth modules that meet the customer's usage specifications based on the YQ_B2216 standard version module and provide corresponding software and hardware support according to customer requirements. For more details, please contact our company at http://www.thinkfiter.com/ or reach out to customer service. 1.2 Application Areas ▶Smart J…

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Zhijian Internet (Xiamen) Information Technology Co., LTD ADD: Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China TEL: +86-17689291145 FAX: 17689291145 E-mail: [email protected] 2026/06/03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Attestation letter Dear Sir or Madam, The RF chip installed in our product: Bluetooth Module, model: YQ_B2216, FCC ID: 2BGXU-YQ-B2216, for marketing purpose, only BLE1Mbps&2Mbps (2402- 2480MHz) function were activated, the other functions, bands and modes was disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely Yours, Signature: Printed Name: Zhibin Guo Title: Manager

CFR 47 §2.911(d)(5)(i)(ii) Attestation Letter Zhijian Internet (Xiamen) Information Technology Co., LTD ADD: Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China TEL: +86-17689291145 FAX: 17689291145 E-mail: [email protected] Attestation Letter Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i)(ii) Filing FCC ID: 2BGXU-YQ-B2216 Zhijian Internet (Xiamen) Information Technology Co., LTD certifies that the equipment for which authorization is soughtis not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Zhijian Internet (Xiamen) Information Technology Co., LTD certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Zhijian Internet (Xiamen) Information Technology Co., LTD certifies that the equipment does not use Kaspersky's software information. Sincerely, Signature Printed Name: Zhibin Guo Title: Manager

U.S. AGENT LETTER OF ATTESTATION Date: 2026-05-14 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2BGXU-YQ-B2216 Z hijian Internet (Xiamen) Information Technology Co., LTD certifies that, as of the date of the filing of the application, Iconsigh is our designated U.S. agent for service of process for the above referenced FCC ID. Zhijian Internet (Xiamen) Information Technology Co., LTD accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Iconsigh accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. D esignated U.S. Agent Information: Company Name: Iconsigh Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: A pplicant: Zhijian Internet (Xiamen) Information Technology Co., LTD Address: Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China FRN: 0035548338 Tel: +86-17689291145 Email: [email protected] Signed by (printed name): Zhibin Guo Signature:

QA-FR-170-B Zhijian Internet (Xiamen) Information Technology Co., LTD ADD: Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China TEL: +86-17689291145 FAX: +86-17689291145 E-mail: [email protected] FCC Authorization Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, Zhijian Internet (Xiamen) Information Technology Co., LTD Hereby authorizes Bay Area Compliance Laboratories Corp. (Xiamen) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Xiamen) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Printed Name: Zhibin Guo Title: Manager

QA-FR-171-A Zhijian Internet (Xiamen) Information Technology Co., LTD ADD: Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China TEL: +86-17689291145 FAX: 17689291145 E-mail: [email protected] FCC Confidential Authorization Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2BGXU-YQ-B2216 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Zhijian Internet (Xiamen) Information Technology Co., LTD hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Printed Name: Zhibin Guo Title: Manager

Zhijian Internet (Xiamen) Information Technology Co., LTD ADD: Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China TEL: +86-17689291145 FAX: +86-17689291145 E-mail: [email protected] Modular Approval Letter Date: 2026-06-03 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 We, Zhijian Internet (Xiamen) Information Technology Co., LTD, hereby request Modular Approval for Product: Bluetooth Module (Model number: YQ_B2216, FCC ID: 2BGXU-YQ-B2216).The EUT meets most of the requirement for modular approval as detailed in FCC 15.212. the requirements is described below: 1. The modular has RF shielding, please refer to the EUT photo. 2. The modular transmitter has buffered modulation/data inputs, Buffered data inputs stage has been integrated in chip (Model: TS8001CC6). 3. The modular transmitter has its own power supply regulation. Please refer to the Block Diagram. 4. Comply with the antenna requirements of Section 15.203 15.205, 15.209 and 15.247, the modular have a PCB antenna permanently attached to the module, the maximum gain is 1.56 dBi. 5. The EUT was tested in a stand-alone configuration, please refer to setup photos exhibit for details. 6. The module labeled with its own FCC ID. 7. Comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. The necessary explanation to be complied with this requirement is contained in the user manual, band please refers to the User Manual. 8. Comply with any applicable RF exposure requirements satisfied with 47CFR §2.1091. Sincerely, Signature: Printed Name: Zhibin Guo Title: Manager

Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-EXP Page 1 / 1 EUT EXTERNAL PHOTOS BLE Antenna

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Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-INP Page 1 / 1 EUT INTERNAL PHOTOS

FCC§15.247 (i), §1.1307(b)(1) & §2.1093 Page 1 of 7 RF EXPOSURE REPORT For Zhijian Internet (Xiamen) Information Technology Co., LTD Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China FCC ID: 2BGXU-YQ-B2216 Report Type: Original Report Product Name: Bluetooth Module Report Number: 2607P20234E-RF-02 Re port Date: 2026-05-26 Reviewed By: Ash Lin Approved By: Miles Chen Prepared By : Bay Area Compliance Laboratories Corp. (Xiamen) Unit 102,No. 902 Meifeng South Road, Binhai West Avenue Science and Technology Innovation Park, Torch High Tech Zone Xiamen, People's Republic of China Tel: +86-592-3200111 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-02 Page 2 of 7 TABLE OF CONTENTS REPORT REVISION HISTORY................................................................................................................................. 3 GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 FCC§15.247 (i), §1.1307(b)(1) & §2.1091 – MAXIMUM PERMISSIBLE EXPOSURE (MPE) ............................ 5 CALCULATED DATA: .................................................................................................................................................... 5 EUT PHOTOGRAPHS ................................................................................................................................................. 6 Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-02 Page 3 of 7 REPORT REVISION HISTORY Number of Revisions Report No. Version Issue Date Description 0 2607P20234E-RF-02 R1V1 2026-05-26 Initial Release Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-02 Page 4 of 7 GENERAL INFORMATION Product Description for Equipment under Test (EUT) Product Name: Bluetooth Module Tested Model: YQ_B2216 Multiple Model(s): N/A Trade Mark: N/A Power Supply: DC 3.3V Maximum Peak Conducted Output Power: -3.28dBm Frequency Range: 2402-2480 MHz Modulation Technique: GFSK Antenna Type: PCB Antenna ★Maximum Antenna Gain: 1.56dBi EUT Received Status: Good Note: 1. The Maximum Antenna Gain was declared by manufacturer. 2. The EUT supplied by the applicant was received on 2026-01-19. Test Facility The Test site used by Bay Area Compliance Laboratories Corp. (Xiamen) to collect test data is located on Unit 102,No. 902 Meifeng South Road, Binhai West Avenue Science and Technology Innovation Park, Torch High Tech Zone Xiamen, People's Republic of China. Bay Area Compliance Laboratories Corp. (Xiamen) Lab is accredited to ISO/IEC 17025 by A2LA (Certificate Number: 7134.01) and the lab has been recognized as the FCC accredited lab under the KDB 974614 D01, the FCC Designation No. : CN1384. Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-02 Page 5 of 7 FCC§15.247 (i), §1.1307(b)(1) & §2.1091 – MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to FCC §1.1307(b)(1) & §2.1091, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. Limits for Maximum Permissible Exposure (MPE) f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1307(b)(1) & §2.1091 RF exposure is calculated. Calculated Formulary: Predication of MPE limit at a given distance S = PG/4πR² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Calculated Data: Mode Frequency (MHz) ★Antenna Gain ★Tune-up Output Power Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limt (mW/cm 2 ) (dBi) (numeric) (dBm) (mW) BLE 2402-2480 1.56 1.43 -3 0.05 20 0.0001 1 Note: 1. The Tune-up output power was declared by the Manufacturer. Result: The device meets MPE at distance 20cm. Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-02 Page 6 of 7 EUT PHOTOGRAPHS Please refer to the attachment 2607P20234E-RF-EXP EUT EXTERNAL PHOTOGRAPHS and 2607P20234E-RF-INP EUT INTERNAL PHOTOGRAPHS. Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-02 Page 7 of 7 Declarations 1. Bay Area Compliance Laboratories Corp. (Xiamen) is not responsible for authenticity of any information provided by the applicant. Information from the applicant that may affect test results are marked with an asterisk “★”. 2. Unless otherwise stated, the results shown in this test report refer only to the sample(s) tested. 3. Unless required by the rule provided by the applicant or product regulations, then decision rule in this report did not consider the uncertainty. 4. The extended uncertainty given in this report is obtained by combining the standard uncertainty times the coverage factor k with the 95% confidence interval. 5. This report cannot be reproduced except in full, without prior written approval of Bay Area Compliance Laboratories Corp. (Xiamen). 6. This report is valid only with a valid digital signature. The digital signature may be available only under the adobe software above version 7.0. ***** END OF REPORT *****

Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Center Frequency Horizontal Vertical 2400MHz 2450MHz 2500MHz 2400MHz 2450MHz 2500MHz 1.56 dBi 0.76 dBi 1.38 dBi -1.25 dBi -2. 46 dBi -1.86 dBi MAX. Gain 1.56dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 35mm Manufacture Zhijian Internet (Xiamen) Information Technology Co., LTD Room 301, No.1 Fuchun Industrial Park Software Park Phase III, Jimei District, Xiamen, China Antenna Photo & Length (mm) Length ：35mm Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 2400 1.56174 -10.0801-7.18716 2450 0.75802 -16.5604-7.48023 2500 1.38582 -22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 2400 -1.25307 -22.1424-12.4294 2450 -2.4652-24.5837-10.4702 2500 -1.86120-29.5214-9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

FCC Part 15.247 Page 1 of 83 FCC PART 15.247 TEST REPORT For Zhijian Internet (Xiamen) Information Technology Co., LTD Room 301, No.1 Fuchun Industrial Park, Software Park Phase III, Jimei District, Xiamen, China FCC ID: 2BGXU-YQ-B2216 R eport Type: Original Report Product Name: Bluetooth Module Re port Number: 2607P20234E-RF-01 Re port Date: 2026-05-26 Reviewed By: Ash Lin Approves By: Miles Chen Prepared By : Bay Area Compliance Laboratories Corp. (Xiamen) Unit 102,No. 902 Meifeng South Road, Binhai West Avenue Science and Technology Innovation Park, Torch High Tech Zone Xiamen, People's Republic of China Tel: +86-592-3200111 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-01 FCC Part 15.247 Page 2 of 83 TABLE OF CONTENTS REPORT REVISION HISTORY................................................................................................................................. 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 TEST MODE AND VOLTAGE .......................................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 7 ★EUT EXERCISE SOFTWARE ...................................................................................................................................... 8 DUTY CYCLE ................................................................................................................................................................ 8 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 9 EXTERNAL I/O CABLE .................................................................................................................................................. 9 BLOCK DIAGRAM OF TEST SETUP .............................................................................................................................. 10 SUMMARY OF TEST RESULTS ............................................................................................................................. 12 TEST EQUIPMENT LIST ......................................................................................................................................... 13 FCC §15.203 - ANTENNA REQUIREMENT ........................................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 14 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 15 APPLICABLE STANDARD ............................................................................................................................................ 15 EUT SETUP ................................................................................................................................................................ 15 EMI TEST RECEIVER SETUP ....................................................................................................................................... 15 TEST PROCEDURE ...................................................................................................................................................... 15 RESULT &MARGIN CALCULATION ............................................................................................................................. 16 TEST DATA ................................................................................................................................................................ 17 FCC §15.209, §15.205 & §15.247(d) - Spurious Emissions ...................................................................................... 19 APPLICABLE STANDARD ............................................................................................................................................ 19 EUT SETUP ................................................................................................................................................................ 19 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 21 TEST PROCEDURE ...................................................................................................................................................... 22 RESULT &MARGIN CALCULATION ...........................................................................................…

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Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-TSP Page 1 / 5 EUT SETUP PHOTOS CE Front View CE Side View Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-TSP Page 2 / 5 RE (9kHz~30MHz) RE – Front View (30MHz~1GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-TSP Page 3 / 5 RE – Rear View (30MHz~1GHz) RE – Front View (1 GHz~18 GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-TSP Page 4 / 5 RE – Rear View (1 GHz~18 GHz) RE – Front View (Above 18 GHz) Bay Area Compliance Laboratories Corp. (Xiamen) Report No.: 2607P20234E-RF-TSP Page 5 / 5 RE – Rear View (Above 18 GHz)